From patchwork Tue Sep 14 07:24:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 12491809 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F053FC433F5 for ; Tue, 14 Sep 2021 07:18:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CC19060F44 for ; Tue, 14 Sep 2021 07:18:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235970AbhINHUK (ORCPT ); Tue, 14 Sep 2021 03:20:10 -0400 Received: from mga04.intel.com ([192.55.52.120]:16795 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235026AbhINHUK (ORCPT ); Tue, 14 Sep 2021 03:20:10 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10106"; a="220032451" X-IronPort-AV: E=Sophos;i="5.85,292,1624345200"; d="scan'208";a="220032451" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Sep 2021 00:18:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,292,1624345200"; d="scan'208";a="433556004" Received: from chenyu-desktop.sh.intel.com ([10.239.158.176]) by orsmga003.jf.intel.com with ESMTP; 14 Sep 2021 00:18:46 -0700 From: Chen Yu To: linux-acpi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Dan Williams , Andy Shevchenko , Aubrey Li , Ashok Raj , Chen Yu , Mike Rapoport , Ard Biesheuvel Subject: [PATCH v2 0/5] Introduce Platform Firmware Runtime Update and Telemetry drivers Date: Tue, 14 Sep 2021 15:24:25 +0800 Message-Id: X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org High Service Level Agreements (SLAs) requires that the system runs without service interruptions. Generally, system firmware provides runtime services such as RAS(Reliability, Availability and Serviceability) features, UEFI runtime services and ACPI services. Currently if there is any firmware code changes in these code area, the system firmware update and reboot is required. Example of bug fix could be wrong register size or location of the register. This means customer services are not available during the firmware upgrade, which could approach several minutes, resulting in not able to meet SLAs. Intel provides a mechanism named Management Mode Runtime Update to help the users update the firmware without having to reboot[1]. This series provides the following facilities. 1. Perform a runtime firmware driver update and activate. 2. Ability to inject firmware code at runtime, for dynamic instrumentation. 3. Facility to retrieve logs from runtime firmware update and activate telemetry. (The telemetry is based on runtime firmware update: it records the logs during runtime update(code injection and driver update). The Management Mode Runtime Update OS Interface Specification[1] provides two ACPI device objects to interface with system firmware to perform these updates. This patch series introduces the drivers for those ACPI devices. [1] https://uefi.org/sites/default/files/resources/Intel_MM_OS_Interface_Spec_Rev100.pdf Chen Yu (5): Documentation: Introduce Platform Firmware Runtime Update documentation efi: Introduce EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER and corresponding structures drivers/acpi: Introduce Platform Firmware Runtime Update device driver drivers/acpi: Introduce Platform Firmware Runtime Update Telemetry selftests/pfru: add test for Platform Firmware Runtime Update and Telemetry .../userspace-api/ioctl/ioctl-number.rst | 1 + Documentation/x86/index.rst | 1 + Documentation/x86/pfru.rst | 100 +++ drivers/acpi/Kconfig | 1 + drivers/acpi/Makefile | 1 + drivers/acpi/pfru/Kconfig | 29 + drivers/acpi/pfru/Makefile | 3 + drivers/acpi/pfru/pfru_telemetry.c | 412 +++++++++++++ drivers/acpi/pfru/pfru_update.c | 567 ++++++++++++++++++ include/linux/efi.h | 50 ++ include/uapi/linux/pfru.h | 151 +++++ tools/testing/selftests/Makefile | 1 + tools/testing/selftests/pfru/Makefile | 7 + tools/testing/selftests/pfru/config | 2 + tools/testing/selftests/pfru/pfru_test.c | 329 ++++++++++ 15 files changed, 1655 insertions(+) create mode 100644 Documentation/x86/pfru.rst create mode 100644 drivers/acpi/pfru/Kconfig create mode 100644 drivers/acpi/pfru/Makefile create mode 100644 drivers/acpi/pfru/pfru_telemetry.c create mode 100644 drivers/acpi/pfru/pfru_update.c create mode 100644 include/uapi/linux/pfru.h create mode 100644 tools/testing/selftests/pfru/Makefile create mode 100644 tools/testing/selftests/pfru/config create mode 100644 tools/testing/selftests/pfru/pfru_test.c